pucker

pucker - English Dictionary

[ noun ]
■ an irregular fold in an otherwise even surface (as in cloth)
→ ruck

[ verb ]
■ to gather something into small wrinkles or folds
e.g.)
・She puckered her lips
→ cockle , crumple , knit , rumple

[ verb ]
■ become wrinkled or drawn together
e.g.)
・her lips puckered
→ ruck , ruck up

[ verb ]
■ draw together into folds or puckers
→ gather , tuck